Two single row annular ball bearings selected dimensionally to be a matched pair or set. The ring faces have been specially ground to specified offsets that will produce predetermined preload when mounted. May include a single row angular contact bearing with faces specially ground for duplex mounting.
20.0 pounds nominal bearing preload rating, angular load direction, c calibration designator, 2.3121 inches minimum and 2.3125 inches maximum bore diameter, light bearing preload designation